ຄວາມວຸ້ນວາຍ ທີ່ ມ. Ferguson

A protester stands with his hands on his head as a cloud of tear gas approaches after a grand jury returned no indictment in the shooting of Michael Brown in Ferguson, Missouri, Nov. 24, 2014.

Protesters run for shelter as smoke fills the streets after the announcement of the grand jury decision not to indict police officer Darren Wilson in the fatal shooting of Michael Brown, an unarmed black 18-year-old, Nov. 24, 2014, in Ferguson, Missouri.

A car burns on the street after a grand jury returned no indictment in the shooting of Michael Brown in Ferguson, Missouri, Nov. 24, 2014.

Police officers stand guard as protesters react to the announcement of the grand jury decision not to indict police officer Darren Wilson in the fatal shooting of Michael Brown, an unarmed black 18-year-old, Nov. 24, 2014, in Ferguson, Missouri.

Lesley McSpadden, the mother of Michael Brown, left standing on the top of a car, reacts as she listens to the announcement of the grand jury decision, Nov. 24, 2014, in Ferguson, Missouri.

Ray Mills (left) and Londrelle Hall pause near a memorial in the middle of a street more than three months after African-American Michael Brown was shot and killed by a white policeman in Ferguson, Missouri, Nov. 23, 2014.

Matt Pearce, a reporter with the Los Angeles Times, holds his head after getting hit by a rock thrown into the crowd during a protest in response to the August shooting of Michael Brown, St. Louis, Missouri, Nov. 23, 2014.

Demonstrators block a busy intersection while marching through the streets to protest the August shooting of Michael Brown, in St. Louis, Missouri, Nov. 23, 2014.

Protesters block traffic as they march in the streets, in St. Louis, Missouri. Ferguson and the St. Louis region are on edge in anticipation of the announcement by a grand jury whether to criminally charge officer Darren Wilson in the shooting death of Michael Brown, Nov. 23, 2014.

A reporter tweets this photo of a car bearing messages in support of Michael Brown, parked outside police headquarters in Ferguson, Missouri, Nov. 21, 2014.

Missouri state troopers stand guard in front of the Ferguson police station in Missouri, Nov. 23, 2014.

A resident walks past signs with tributes to Michael Brown outside a deserted store in Ferguson, Missouri, Nov. 23, 2014.